2018 MG GS · 3,078 MOT tests
2018 MG GS reliability
2018 MG GSs fail 19.3% of first MOT tests, 34% more MOT fails than the average car its age and mileage, ranking 2 of 4 GS years (3,078 DVSA tests, 2022 to 2024).
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- first-time fail rate (all MG GSs: 21.3%)
- 19.3%
- first-time fail rate (all MG GSs: 21.3%)
- fails than cars of the same age and mileage
- 34% more
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 4
- 34,447
- typical miles at its MOT, aged about 4
- MOT tests, 2022 to 2024
- 3,078
- MOT tests, 2022 to 2024
Year on year
2018 against the years either side
- 2017 cars: 36% more MOT fails than the average car its age (the 2018 car does better)
- 2019 cars: 49% more MOT fails than the average car its age (the 2018 car does better)
- Weak spot: seat belts and airbags, 2.3% of tests fail here (630% above cars of the same age and mileage).
- Strong point: windscreen, wipers and mirrors, 38% fewer fails than comparable cars.
- Plates: a 2018 car carries a 67 plate (January–February 2018), or a 18 plate (March–August 2018), or a 68 plate (September–December 2018).
Common problems
What fails on a 2018 MG GS
Fail rate by area
- Lights and electrics8.5%
- Tyres5.4%
- Brakes5.3%
- Seat belts and airbags2.3%
- Windscreen, wipers and mirrors2%
- Exhaust, emissions and leaks1.3%
- Suspension0.6%
Average for cars of the same age and mileage
Top failures
Headlamp aim set too low 4.09%
Headlamps aimed too low light the road poorly and reduce the driver's view ahead, especially at night.
Brake pads worn below 1.5mm 2.14%
Pads worn below 1.5mm lose stopping power and can damage discs, so replacement is needed before the car is driven.
Tyre pressure monitoring system faulty 1.92%
A faulty tyre pressure monitor cannot warn about low tyre pressure, so check tyres manually and have the fault diagnosed.
ABS warning lamp shows a fault 1.69%
A lit ABS warning means the anti-lock system may not work, so wheels could lock during emergency braking.
Airbag warning lamp shows fault 1.66%
A lit airbag warning means the airbag system may not deploy in a crash, so it needs diagnosing and repairing.
Tyre tread below 1.6mm 1.33%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Common advisories
Brake disc pitted or scored (13.19%) · Tyre slightly damaged or cracking (12.57%) · Tyre worn close to legal limit (8.67%) · Brake pads wearing thin (5.26%) · Child seat limits belt inspection (3.41%) · Nail in tyre, monitor (2.73%)
Other years
Every MG GS year
The full picture: MG GS reliability. Before you pay for any MG GS, a Full Check (£9.99) shows finance, stolen and write-off records the MOT can't.
Source: DVSA anonymised MOT results, 2022 to 2024, class 4 normal tests.
Is a 2018 MG GS reliable?
2018 MG GSs fail 19.3% of first MOT tests, 34% more MOT fails than the average car its age and mileage, ranking 2 of 4 GS years (3,078 DVSA tests, 2022 to 2024).
What fails on a 2018 MG GS MOT?
Most often headlamp aim set too low (4.09% of tests), brake pads worn below 1.5mm (2.14% of tests), tyre pressure monitoring system faulty (1.92% of tests).
How many miles should a 2018 MG GS have done?
At its MOT aged about 4, a typical 2018 MG GS shows 34,447 miles. Much higher or lower is worth asking about.
What plate is a 2018 car?
A car first registered in 2018 carries a 67 plate (January–February 2018), or a 18 plate (March–August 2018), or a 68 plate (September–December 2018).
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